This question already has an answer here:
How do I handle the situation where the non-technical project manager never agreed to our estimated time line and as per him it should be half or even less than what we had estimated?
According to him whether there is stored procedure of 100 lines or enablement of some security features for which we need to do RND it should be done on 1-2 hours only and he asks questions like "why does it take so much time, it should be done in 1-2 hours only".
He just goes on asking more and more questions and is never satisfied with the answer.
What should I say or how do I handle this situation?